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**kwmech** · 10-12-2018, 01:07 PM

In my opinion, 700s should NEVER be considered in a truck for any type of work. It is a passenger car transmission. The very last thing I would do is put one behind a big block. I've had enough trouble with them behind small blocks, special drums, vette servos, shift kits heavy duty this and that...they just don't last long term when asked to anything heavy duty, such as towing. Go with a Gear Vendor or a 4L80e. I am converting my Suburban from a 700 to a 4L80 and I have a gear vendor in my 69 flat bed. Flat bed has a built big block and the suburban is a stock 350 tbi soon to be a 400 next year if money allows

10-12-2018, 01:07 PM	#9
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,391	Re: 700r4 or TH400 with gear splitter? In my opinion, 700s should NEVER be considered in a truck for any type of work. It is a passenger car transmission. The very last thing I would do is put one behind a big block. I've had enough trouble with them behind small blocks, special drums, vette servos, shift kits heavy duty this and that...they just don't last long term when asked to anything heavy duty, such as towing. Go with a Gear Vendor or a 4L80e. I am converting my Suburban from a 700 to a 4L80 and I have a gear vendor in my 69 flat bed. Flat bed has a built big block and the suburban is a stock 350 tbi soon to be a 400 next year if money allows